Z used to sleep till 7:30/8:00 every morning, then slowly he started waking earlier and earlier until he would wake at 6:30. Then he jumped to waking at 6 (and then go back to sleep after nursing) and after a few days of 6am waking, he woke at 5am. The night he woke at 5, I let him fuss off and on for about 20 minutes (he'll wail out for a couple seconds then be quiet for a minute or two :? ) then I went in to rub his back till he went back to sleep. Then he was up again at 6, at which point I fed him. THen last night he was up at 4. I did the same back rub and he slept till 7:30. So he's waking an hour earlier every day or couple of days. There's not much different in his normal daytime routine and it's not a habit waking since it's getting earlier, right? Anybody else deal with this and figure out what it was? I htink we'll get it worked out in a few days, but I just have no idea what's going on....he'd been sleeping so well for several months.